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Finding the Third Proportional to 7,401.38 and 11,718

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Solution

The third proportional to 7,401.38 and 11,718 is: 18,552.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,401.38 : 11,718 = 11,718 : x
  2. Step 2: Convert to fraction form
    7,401.38/11,718 = 11,718/x
  3. Step 3: Cross multiply
    7,401.38x = 11,718 × 11,718
  4. Step 4: Simplify right side
    7,401.38x = 137,311,524
  5. Step 5: Solve for x
    x = 137,311,524/7,401.38
  6. Step 6: Final answer
    x = 18,552.16

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.